[Xen-devel] [PATCH v1] Xen-blkfront fixes to dynamically adjust ring.

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

Hi!

This patch allows dynamic reconfiguration of the three different parameters
that an Xen blkfront driver initially negotiates:

 * max_indirect_segs: Maximum amount of segments.
 * max_ring_page_order: Maximum order of pages to be used for the shared ring.
 * max_queues: Maximum of queues(rings) to be used.

But the storage backend, workload, and guest memory result in very different
tuning requirements. It's impossible to centrally predict application
characteristics so it's best to leave allow the settings can be dynamiclly
adjusted based on workload inside the guest.

 drivers/block/xen-blkfront.c | 320 ++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 304 insertions(+), 16 deletions(-)

Bob Liu (1):
      xen-blkfront: dynamic configuration of per-vbd resources


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